Controlling-valve for hydraulic transmission devices.



PATENTED DEC. 10, 1907.

w. 0. SGHWARZ. CONTROLLING VALVE FOR HYDRAULIC TRANSMISSION DEVICES."

APPLICATION FILED DEG.15,1906.

2 SHEETSSHEET 1 lNL/ENTOR. WMC. S-CHWARZ. BY @MU PATENTED DEC. 10, 1907.W. U. SGHWARZ.

2 SHEE TSSHEYHT z.

. z .T R M Wm H 7 m c Wm M m 3 l 4 I T 9 L 1% W 5 i. $5. Q 7- q mm 2CONTROLLING VALVE FOR HYDRAULIC TRANSMISSION DEVICES.

APPLICATION FILED DEG.15, 1906.

I trolling valve for hydraulic transmission deand automatically actuatedto open or close a citizen of the United States, and resident a parthereof.

filed an application for illustratedin the accompanying drawings, in

cylinder, havinig UNITED STATES PATENT oEEioE.

WILLIAM C. SCfiWARZ, OF EDWARDSVILLE, ILLINOIS.

No. 873,621 Specification of Letters Patent. Patented Dec. 10, 1907. I

Application filed December 15,1906. Serial No. 347.976.

T 0 all w]: am it may concern:

Be it known that I, WILLIAM C. ScHwARz,

of Edwardsville, Madison county, Illinois, have invented certain new anduseful Improvements in Controlling-Valves for Hydraulic TransmissionDevices, of which the following is a specification containing a full,clear, and exact description, reference being had-to-the accompanyingdrawings, forming My invention'relates to an automatic convices, and theobject of my invention is to provide a hydraulic transmission device Iwith a controlling valve which may be mechanically opened and closed asdesired, and

which, when the transmission device is in operation, will beautomatically opened and closed to correspond with the speed of the 1transmission device.

A further object of my invention is toprovide an automatic valve for theform of hydraulic transmission device on which I have patent May 29,1906, Serial No. 319,357. 1

My improved valve consists in a pair of cylindrical members, onearranged on the interior of the other, which. cylindrical mem: here areprovided with oppositely arranged openings, through which fluid passes,and which cylindrical members are mechanically the passageway throughsaid members.

My invention further consists in certain novelfeatures of constructionand arrangement of parts, which will be hereinafter more fully setforth, pointed out in the claims, and

which Figure I is a side elevation of a hydraulic transmission deviceequipped with my improved valve; Fig. 2 is an elevation of the rear sideof the transmission device; Fig. 3 is a vertical section taken on theline 33 of Fig. 1'; Fig. 4 is a vertical section taken on the line 4-4-of Fig. 3; Fig. 5 is a horizontal section taken on the line 55 of Fig.2.

Referring by numerals to the accompanying drawings :1 designates a drum,orhollow a removable side 2, and the interior of sai cylinder beingdivided-into two compartments 3 by the web 4. Formed in the, upper endof this web 4 is a cylindrical valve chamber 5, and oppositely arrangeddiamond shaped ports 6 are formed through the web to establishcommunication between the chambers 3 and 5. Formed in the web 4 belowthe chamber 5 is a pair of circular chambers'7, and formed through thewalls surrounding these chambers are the oppositely arranged ports 8,which establish communication between the cha1nbers3 and 7.

One of .the chambers 7 is arranged in the 1 center of the drum, and theopposite chamber being located on the opposite side of the centralchamber from-the valve chamber 5.

Formed in the center of the removableplate 2 is a bearing 9, providedwith a suitable gland or stuffingbox 10, and arranged for'rotation insaid bearing is the engine or motor shaft 11, .the inner end of whichextends through the center chamber 7, and

, fixed thereon and occupying said chamber is formed integral with oneend of this tubularvalve 15 is a journal 17, which extends through asuitable bearing formed in the side wall of thecylinder 1, and fixed onthe extended end of said journal isa segmental .pinion 18.

Arranged for rotation within the tubular valve 15 is a tubular valve 19,through the sides of which are formed the oppositely ar-' ranged diamondshaped ports 20, which are adapted to coincidewith the ports 16 and6previously described, and formed integral with one end of this tubularvalve 19 is a journal 21, which operates through a suitable bear ingformed 1n the plate 2, and fixed on the extended end of said journal isa lever 22. Pivota'lly connected tothe lower end of this lever 22 isa-pairof links 23, the lower ends of Which'are pivotally connected tothe upper ends of apair of weighted levers 24, the lower ends of whichare journaled upon a pin 25 fixed to the plate 2 at a point aproximately opposite the oint where the links 23 are connected to theever 22. retractile coil spring 24 are connected to the The ends of aconnected to the face of the pinion 18.

. passes through the sleeve '30 an 38 fixed in said shaft 29.

the sleeve 36 is provided with a roove 39 ports 8, and

A hub 28 is formed integral with the outer face of the sidewall of thecylinder 1, and rigidly seated in said hub, and-in alinement with theshaft 1], is a shaft 29. Arranged for rotation on the outer end of thehub 28 is a sleeve 30, on the inner end of which is formed a segmentalflange 31, provided with teeth 32, which mesh with the teeth of thesegmental pinion 18. A retainin screw 33 I enters a corresponding groove34 formed in the pe riphery of the hub 28. Formed in the sleeve 30 is aspirally disposed slot 35, which extends approximately oneuarter aroundsaid'sleeve, and arranged to slide on the shaft 29, within the sleeve,is a collar 36, which is provided with a slot 37 which receives a pinwhich receives the end of a suitab e. lever or device for shifting saidsleeve 36 ion itudinally upon the shaft 29. Seated 1n the sleeve 36 andextending through the spiral slot 35 is a pin 35. The entire spacewithin the cylinder 1 and the compartment 7 is filled with a suitableheavy liquid, such as lubricating oil or glycerin.

The operation of the device is as follows: The engine or motor shaft 11bein rotated necessarily drives the pinion 12 in t e center of thecylinder 1, and said pinion will impart a corresponding rotary motion tothe pinion 14. As these pinions rotate, the liquid in one of thecompartments .3 will be drawn into the com ,artments 7 through one ofthe 'scharged through the oplposite port 2, and from thence said 'quidwi ass through the open ports 6, 16, and 20, bac to the firstcompartment 2, and thus a continuous circulation of the liquidmaintained as long as the ports 16 and 20 in the cyhndrical valves arein alinement with one another, or open. To look the various partstogether for im arting rotary motion to the c linder 1 and shaft 29, t esleeve 36 1s s 'fted longitudinally on the shaft 29, and the in 35engaging in the spiral slot 35 partial y rotates the sleeve 30, and thesegment 31 meshing with the segmental pinion 18 correspondingly movessaid union, and correspondingly rotates the tu ular valve 15. Themovement of the pinion18 is transferred 11. thus driven, they will be 0erating at the The outer end of by means of the link 27 and arm 26 tothe causes a partial" rotation of the tubular valve 19 to take place,the movement of which is directly opposite the rotary motion of thetubular valve 15; and, as a result, the diamond shaped ports 16 and 20are moved out of alinement with \one another, thus cutting off thepassage of liquid through the ports 6, and this action shuts off thecirculation of liquid from one compartment 3 to the other,

and, as a result, the pinion 12 can no longer drive the pinion 14, andthe parts will therefore be locked to one another, and the cylinder 1and shaft 29 will be driven at the same rate of speed as is the engineor motor shaft When the cylinder 1 and shaft 29 are maximum speed, andshoul it be desirable that the shaft 29'be driven at a medium speed, thesleeve 26 is shifted so as to rotate the sleeve 30, and through themedium of the various parts the tubular valves 15 and 19 are partiallyrotated in such a manner as to partially 0 en the diamond shaped ports16 and 20, an this results in a slight circulation of the liquid throughsaid ports, and consequently the pinions 12 and 14.wil l correspondingly'0 crate, and the rotary motion im arted to tli re uced. When the propers eed of the shaft 29 is obtained by proper a justment of the valves 15and 19, said s eed is maintained by the automatic action of the valve19, for in case the load on the shaft 29 is increased for any reason,the speed of the cylinder is consequently retarde and as a result, theweighted levers 24 will swing inwardly by centrifugal action, the links23 will actuate e shaft 29 will consequently be the finger 22, and, as aresult, the cylindrical valve 19 is rocked so as to relatively decreasethe o enin s between the ports '16 and 20, and tfius a ess amount ofliquid is allowed to pass through thepofts in the valves, and the speedof the shaft 29 is correspondingly increased. This regulation of t epassage of the liquid throng the valves is automatically maintained bythe centrifugal action of hted levers 24, andthus the speed at.

the we' which the shaft 29 is driven can be very accurately regulated.The diamond shaped ports in the valves provide for a gradual increasingor diminishing area of o eni through which the liquid passes whiih sa ivalves are in operation, and this arrangement dispenses with any suddenmovement or jar resulting from a quick transferring of the rotary motionof the engine shaft to the shaft 29.

I claim 1. The combination with a cylindrical casing divided into twocompartments bya bifurcated partition, of a pair of meshing 1 inionsarranged for rotation in the chamers within the bifurcated partition, apair of perforated cylinders, one upon the other, to form an adjustablevalve for controlling the flow of liquid from one compartment to theother, and a governor mechanism for automatically regulating the area ofthe opening through said valve.

2. The combination with a cylindrical casing, divided into twocompartments by a bifurcated partition, of a pair of pinions arrangedfor rotation in the chambers within the bifurcated partitions, a pair ofperforated cylinders, one upon the other, to form a valve forcontrolling the flow of liquid from one compartment to the other, meanswhereby said valve is' opened or closed, and a governor mechanismactuated by the rotation of the casing for automatically opening orclosing the valve.

3. The combination with a pair of alined shafts, of a hollow cylinderrigidly fixed on one of the shafts, which cylinder is formed into twocompartments, a pair of meshing pinions arranged for operation withinthe cylinder between the compartments, one of which pinions is fixed onthe shaft opposite the shaft to which the cylinder is fixed, a'

pair of perforated cylinders, one upon the other, to form a valve whichis arranged between the two compartments in the cylinder, and anautomatic governor .mechanism for shifting the relative positions of thecylin= ders forming the valve to vary the area of the openingtherethrough.

4. The combination with a pair of alined shafts, of a hollow cylinderrigidly fixed on relative positions of the cylinders forming the valveto vary the area of the opening therethrough, and aseparate meai sconnected to the cylinders forming the valve for opening and closing thesame. 5. The combination with a cyllndrical casing, divided into twocompartments,

which compartments are filled with fluid, means arranged between thecompartments for delivering the fluid from one compartment to another, apair of perforated cylinders, one upon the other, to form a valve'arranged between the com artments for controlling the flow of liquid omone com partment to the other, and a governor mechanism actuated by therotation of the casing for automatically regulating the area of opieningthrough the cylinders forming the va ve.

In testimony whereof, I have signed my a name to this specification, inpresence of two subscriblng witnesses.

' WILLIAM C. SOHWARZ.

Witnesses:

. M. P. SMITH,

E. L. WALLACE.

